Oil burner



W. EBKE OIL BURNER Sept., 16, 1930.

Filed Aug. 24, 1929 Woking Patented Slept. 16, v1,93()

UNITED STATES WILLIAM EBKE, OF I-IELVEY, NEBRASKA lOIL BURNER Application led August 24, 1929. Serial 11o. 388,100.

`My invention relates to oil burners, its primary object being the provision of an oil burner construction which is so designed that the iiame cannot be extinguished under violent fluctuations of wind pressures.

Another of my objects is the provision of structures which make it easy to'assemble and disassemble the parts of the oil burner so that easy access may be obtained to the working parts and so that the oil burner will be fool proof in the hands of inexperienced operators.

My oil burner is designed specifically for use in connection with heaters for brooders, incubatore, farrowing houses and the like where the draft within the burner is subjected to all of the fluctuations of wind pres sures.

Having in view these objects and others which will be pointed out in the following description, I will now refer to the drawings, in which Figure 1 is a plan View of my oil burner. f

Figure 2 is a median vertical sectional view of the assembled oil burner.

Figure 3 is a view in perspective of the base of my oil burner.

Figure 4 is a perspective view of the tuyre cover.

Figure 5 is a view in perspective of the flame spreader.

My oil burner includes a base 10, a tuyre cover 11 and a iiame spreader 12. The base is provided with a plurality of bolt holes 13 for securing the entire burner in place. A peripheral wall 14 rises from'the base, this wall being designed for the purpose of supporting a heating drum which surrounds the burner, the heating drum being not shown since it forms no part of my present invention and since its construction and function are well understood by all those skilled in the art. The oil is fed through an aperture 15 into a central cup 16 on the base. The walls of this cup rise to a level which is intermediate the top and bottom surfaces of the tuyere cover as shown in Figure 2. The tuyre cover is provided with a central aperture 17 and above this is the flame spreader 12. As is common to all burners of this type, the flame strikes the'flame spreader and is thus d irected outwardly toward the drum of the heater. The cup 16 is surrounded by anv annular channel 18 vfor receiving the overflow from the cup 16. The base is also provided with a drain 19 for the overflow, the oil being conducted from a drain to a suitable container at some distance from the burner. Thus far the construction is more or less common to all burners of this type.

rlhe base 10 is provided with two openings 2O for the admission of air to the burner, the oplenings being diametrically opposite each ot er. the vwalls being parallel except at the middle where they are bowed out in the form of circular arcs. The openings 20 lie entirely between the two walls 21. The two walls 21 are connected by means of a pair of ltransverse walls 22 which are somewhat lower in height than the walls 21. The air entering the openings 20 must thus pass over the top edges of the walls 22 before it can reach the flame. The walls 22 have also another function in that they with the walls 21' enclosev the space surrounding the burner so that the accidental overflow of oil cannot reach the openings 20. The peripheral wall 14 is slightly raised between thewalls 21as shown in Figure 3. f

The tuyre cover 11 has edge walls 23 so dimensioned that they will lie outside and in close Contact with the walls 21. The walls 23 are also bowed in their middle portion to conform to the shape of the walls 21. The walls 23 are notched at` their ends so that the tuyre cover readily seats` over the walls 21 and over the raised portions of the wall 14. In order to still further facilitate this seating I provide anannular rib 24 which is so Two walls 21 rise from the base 10,V

dimensioned that it seats within thel bowed The current of air entering through the openings varies in intensity between rather wide limits. Burners of this type are usually provided with thermostats which automatically control the feed of oil to the burner. The thermostat arrangement is very effective for this purposev but an additional difculty is encountered in climates where the force of the wind varies in intensity between wide limits. In all other burners, so far as I am aware, a strong wind entering throughy the openings 2O will extinguish the flame at the mouth of the cup 16 and this is often followed by disastrous results unless it is discovered in time. In order to prevent this I provide a series of baffles so designed and arranged as to effectively breakthe force of a strong wind without materially affecting the movement of aI gentle current of air through the burner. As shown in Figure 4, the tuyere cover has four legs or baffles which are wedge shaped or tapered in length and oval in cross-section. The wider portions of the oval of the baffles 25 are placed facing walls 23. The current of air striking these bafiles 25 will be deflected laterally and their force will be broken so that the flame cannot be extinguished. The shape of these baffles, however, is such as'to reduce to ak minimum the friction encountered by a gentle current of air which moves freely toward the flame without appreciable obstruction from the baffles.

The base 10, the tuyre cover 11 and the flame spreader 12 are each of integral construction, being preferablyf formed from cast iron. The base is further provided with a pair of spaced apart ribs 26 which assistV in directing the overflow of fuel toward the drain 19. The flame spreader 12 is pivotally secured at 27 to the tuyre cover 11 'so that it is movable in order to give access to the flame opening 17 as when lighting the burner. It is provided also with a stop 28 which permits swinging movement in one direction only and which limits Ithe movement toward operative position so that the flame spreader is in its mosteffective position.

Having thus described my invention yin such full, clear, and exact terms that its construction and operation will be readily understood by others skilled in theV art to which it pertains, what I claim as new and ifraiso desire to secure by Letters Patent of the United States is:

1. An oil burner including a circular base having a fuel cup and a central conduit for conducting liquid fuel to said cup, said base being provided with a pair of diametrically opposed openings for admitting air therethrough, upstanding walls Von said base forming a pair of aligned tuyeres for conducting the air from the openings to the cup, a cover for said tuyr'es, said cover being provided with an opening, and bafles depending from said cover,rsaid baliies being positioned obliquely in pairs in .said tuyeres and with the baffles of each pair converging toward the cup for breaking the force of the air currents.

2. An oil burner including a circular base having a fuel cup and a central conduit for conducting liquidv fuel to said cup, said base being provided with a pair of diametrically opposed openings for admitting air therethrough, upstanding walls on said base forming tuyeres for conducting the air from the openings to the cup, an upwardly proj ecting baffle in each of said tuy`eres adjacent the inlet opening thereof, a cover for said tuyeres, said cover being provided with an opening, and baffles depending from said cover, said baffles being positioned obliquely in pairs in said tuyres and with the baffles of each pair converging toward the cup for brcal-:ing the force of the air currents.

8. An oil burner including a circular base having a fuel cup `and a centralconduit for conducting liquid fuel to said cup, said base being provided with a pair of diametrically opposed openings for admitting air therethrough, upstanding walls onsaid base forming a pair of aligned tuyeres forconducting the air from the openings to the cup, a cover for said tuyres, said cover ,being provided with an opening, and baffles depending from said cover, said baffles being positioned obliqnely in said tuyeres for breaking the force or the air currents, said baffles being tapered and being oval in horizontal section and positioned with the wider portion of the oval receiving the force of the air current.

In testimony whereof I affix my signature.

. WILLIAM EBKE. 

